4-STROKE EXHAUST

Choose a vehicle:

User Tip: If you're unsure of your vehicle type, you may skip the machine type selection box.

» Log in to use your Rider Profile Machines

Please select make, model and year

4-Stroke Exhaust4-Stroke Exhaust

4-Stroke Dirt Bike Exhaust

It’s no secret that a properly selected aftermarket exhaust system can do wonders for your dirt bike. There isn’t an easier or faster way to add horsepower throughout your bike’s RPM range. When you want a new dirt bike exhaust system, Rocky Mountain ATV/MC is the best source around. We carry an extensive selection of dirt bike exhausts. Do you love FMF exhausts? So do we. Are you looking for a Yosh exhaust system? We’ve got several. How about a ProCircuit T-4 silencer? We carry it. Do you want a Moto Works exhaust? You’re in the right place. Interested in a Lexx MXe slip-on? Get it here at Rocky Mountain ATV/MC. If you own a 4-stroke dirt bike, a new exhaust system is a must have.

Whether you need a new exhaust system to boost your motocross racing performance or just a good silencer with a USFS-approved spark arrestor for enduro use, Rocky Mountain ATV/MC is the best place to find dirt bike exhaust pipes. We carry all of the leading brands: FMF, Yoshimura, Lexx, Pro Circuit, Motoworks and more. Exhausts are available in a variety of materials as well: titanium, stainless steel, aluminum and even carbon fiber. When you need a 4-stroke exhaust for your motorcycle, you can’t go wrong with these excellent exhaust systems. Whether you’re into motocross or just love a good trail, your dirt bike will really rip with these exhaust systems!

Latest Dirt Bike 4-Stroke Exhaust Reviews – You could win up to $500 for reviewing products!

  • FMF Power Bomb Header Pipe

    FMF Power Bomb Header Pipe

    Michael in OH

    Fmf power bomb header ctf250rally

    Fit and finish perfect Oxegen plug line up perfect quick shipping I have q4 exhausts it quoted it down about 5 decibels on my phone meter. Little more bottem end took maybe 15 min to instaul

    Read All Reviews
  • FMF Factory-4.1 RCT Anodized System With Titanium End Cap

    FMF Factory-4.1 RCT Anodized System With Titanium End Cap

    DANIEL in CA

    Torque

    Sounds great with or without sparky. Mounts perfect and lighter than stock.

    Read All Reviews
  • Lexx MXe Slip-On Silencer With Mid-Pipe

    Lexx MXe Slip-On Silencer With Mid-Pipe

    Ben in PA

    Great value

    Like most said, it looks like a good quality exhaust. Can’t beat the price. The slip on is really nice. The mid pipe is a little cheap looking. The joints should have clamps for a little more money. You have to use silicone on the joints. The clamp for the muffler is a little cheesy but it works. . I’m not a fan of the giant gap between the side pannel and the pipe. Overall it looks and sounds pretty good.

    Read All Reviews
  • FMF Factory-4.1 RCT Anodized System With Carbon End Cap

    FMF Factory-4.1 RCT Anodized System With Carbon End Cap

    john in OR

    Great mellow sound

    Figment was great. Wanted a quieter aftermarket silencer and with the quiet insert installed I am very happy with it.

    Read All Reviews
  • FMF Mini Power Core IV System

    FMF Mini Power Core IV System

    Eric N in TX

    WOKE THIS KLX UP!!!

    When I first looked at the pipe I thought to myself there’s no way it was going to fit! Of course I was wrong! Pipe fits great, looks awesome as they always do and it opened up the power of the big bore kit on the bike! It’s my wife’s bike and I never really told her it was modified! When she rode it after I put the pipe on she immediately asked me what did you do to my bike it’s way faster? No more testimonies needed!!!

    Read All Reviews
  • Yoshimura RS-4 Stainless/Aluminum Full System

    Yoshimura RS-4 Stainless/Aluminum Full System

    Matthew in PA

    Great value in a full system

    Looks great, fits great, and the sound is insane. This thing barks now, sounds so mean. Havent been able to ride it yet to review the power gains but the sound is amazing and expecting good gains. one hang up is it had damage to the threads for the heat shield bolt hole. had to use a tap and clean up the threads to get the bot to start. Luckily i had the tools or otherwise would have been a little mad.

    Read All Reviews
RM Cash ProgramParts Finder